Keyway-cutter.



No. 678,602. Patented luly l6, I901. C. R. WATSON, In. &. C. M. HUPWOOD.

KEYWAY CUTTER. (A'pplication m d mgr. so, 1901.)

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No. 678,602. Patented July I6, IQUH. C. R. WATSON, In. & C. M. HUPWOOD. KEYWAY CUTTER.

(Application filed Mar. 30, 1901.) Modem 2 Sheets-Sheet 2.

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CIIAUNOEY R. WATSON, JR, AND CLARENCE M. HOPWOOD, OF INDIANAPO- LIS, INDIANA, ASSIGNORS OF ONE-FIFTH TO CIIAUNOEY R. NVATSON, SE,

OF SAME PLACE.

KEYWAY CUTTER.

SPECIFICATION forming part of Letters Patent No. 678,602, dated July 16, 1501.

(No model.)

T0 61/ whom, it may concern:

Be it known that we, OHAUNCEY R. W'AT- SON, J r., and CLARENCE M. Horwoon, citizens of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Keyway-Outter, of which the following is a specification.

Our invention relates to an improvement in machines for cutting keyways in shafts or other like bodies.

The object of our invention is to produce a machine of the class described by which keyways of any desired dimensions may be cut in shafts of various diameters and by which a keyway may be accurately extended in length beyond the normal cutting length of the machine.

The accompanying drawings illustrate our invention.

Figure 1 is a side elevation. Fig. 2 is a section on line 2 2 of Fig. 1 looking to the right. Fig. 3 is a section on line 2 2 of Fig. 1 looking to the left. Fig. 4 is an end elevation.

In the drawings, 10 indicates a suitable supporting-frame, to which is secured a pair of heads 11 and 12, which are connected by two pairs of parallel tie-rods 13 and 14, which form supporting-guides for work and tool holders. Secured to rods 14 is a tool-holder 15, within which is revolubly mounted a shaft 16, provided on its outer end with a gear 17, which meshes with a driving-gear 18, secured to one end of a shaft 19, extending through head 12 and provided at its other end with a gear 20. Pivoted upon shaft 19 upon the outer face of head 12 is a hanger 21, provided with bearings 22, within which is journaled a shaft 23, carrying upon its upper end a gear 24, arranged to mesh with gear 20. Hanger 21 is provided. with adjusting means 25, by which it may be secured in different positions about shaft 19. The lower end of shaft 23 is adapted to receive a gear 26, which is adapted to mesh with a gear 27, carried by a shaft 28, journaled in and extending between the lower portions of heads 11 and 12. Shaft 16 is provided upon its inner end with a socket 29, which is adapted to receive the head 30 of a cutter-arbor 31, said cutter-arbor being detachably mounted between said shaft and an adjustable center 32. The arbor 31 is adapted to have secured thereto any suitable millingcutter 33 in the usual well-known manner.

Mounted upon the tie-rods 13 and longitudinally movable thereon between heads 11 and 12 is a work-holder, which consists of a body 35, upon which is mounted on inclined ways 36a vise 37, provided with movable jaws 38, adjustable toward and from each other by suitable screws 39. Vise 37 is longitudinally adjustable upon ways 36, so as to vary the distance between the face thereof and the toolholder 15, by means of a suitable adjustable screw 40.

That portion of shaft 28 which lies between heads 11 and 12 is threaded, and meshing in the threads is a pinion 41, carried by shaft 42, journaledin body 35, and provided at its outer end with an operating handle or crank 43, the arrangement being such that the rotation of pinion 41 will operate in the threads of shaft 28 as a rack and make possible a hand adjustment of body 35 along the tierods 13. Mounted in suitable transverse guides formed in the body 35 is a clutch 44, which is adapted to be thrown into and out of engagement with the threads of shaft 28 by any usual means, such as a cam 45, carried by a shaft 46 and operated by any suitable form of lever 47.

Each head 11 and 12 is provided with a central opening 48, through which the shaft operated upon may pass. In order to support the ends of any shaft 49 clamped between jaws 38, we mount upon each head 11 and 12 a plate 50, which is supported between suitable guides 51, so as to be vertically adjusted by means of a screw 52, supported in the adjacent head. Each plate 50 is provided with a pair of rollers 53, the axes of which lie at an angle to each other and at a right angle to the axis of the machine or line of movement of the work-holder 37, the said rollers thus forming a support for the ends of the shaft 49 operated upon.

In operation a cutter 33 of such form as to produce a keyway of the desired crosssection is secured to its arbor 31 and then mounted in position between shaft 16 and center 32. The material operated upon is then passed through the openings 48 in heads 11 and 12 and clamped between jaws 38, that portion of the material into which the keyway is to be out being properly centered beneath the cutter 33. Plates 50 are then vertically adj usted, so as to bring rollers 53 of each plate into engagement with the shaft 49, and thus form a support for the ends thereof in alinement with the face of vise 37. In case a keyway of a greater length than the possible stroke of the work-vise 37 upon the rods 13 is desired the material may be shifted after the production of a portion of the keyway and reclamped between the jaws 38. Rollers 53 maintain the shaft 49 in accurate position, however, so that it may be easily and accurately reset in the vise and the key-way continued to any desired length.

Weclaim as our invention 1. A machine of the class described, consisting of a suitable frame having guides thereon, a workholder mounted on said guides, means for shifting said work-holder on the guides, supports for receiving and supporting the ends of the work projecting beyond the Work-holder, means for adjusting said supports toward and from the plane of movement of the work-holder, and a cutterholder, adjustable supports carried by each of said heads to aline with the work-holder, and a cutter-holder mounted between said heads in position to cooperate with the workholder.

4. In a machine of the class described, the combination with a pair of heads, of a workholder mounted upon suitable guides therebetween, means for shifting said work-holder along the guides, a pair of work-supporting rollers 53 mounted upon each head, means for shifting each pair of rollers upon its head, and a cutter-holder mounted in position to cooperate with the work-holder.

5. In a machine of the class described, the combination with a pair of heads, of two sets of tie-rods connecting said heads, a cutterholder mounted upon one set of said tie-rods, a work-holder mounted upon the other set of tie-rods and movable thereon, means for moving said work-holder between the heads, a pair of work-supporting rollers 53 mounted upon each head, and means for adjusting each pair of rollers upon its head so as to aline with the work-holder.

6. In a machine of the class described, the combination with a pair of heads, of two sets of tie-rods connecting said heads, a cutterholder mounted upon one set of tie-rods, a Work-holding body mounted upon the other set of tie-rods, means for shifting said body upon said tie-rods between the heads, a vise mounted upon said body, means for adjusting said vise toward and from the cutterholder, and work-supporting means adjustably mounted upon each of said heads in position to aline with said vise.

7. In a machine of the class described, the

combination with a pair of heads, of two sets upon said tie-rods between the heads, a vise mounted upon said body, means for adjusting said vise toward and from the cutterholder, a pair of work-supporting rollers mounted upon each head, and means for adjusting each pair of rollers so as to aline with the vise.

OHAUNCEY R. WATSON, JR. CLARENCE M. HOPVVOOD.

Witnesses:

ARTHUR M. Hoon, FRANK A. FAHLE. 

